:root {
  --bg: #0b0f14;
  --bg-soft: #111722;
  --text: #e6e6e6;
  --muted: #9aa4b2;
  --border: #1f2937;
  --accent: #5eead4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
}

/* ---------- HEADER ---------- */

.top-nav {
  position: sticky;
  top: 0;
  background: rgba(11, 15, 20, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 2rem;
  z-index: 100;
}

.brand a {
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text);
  text-decoration: none;
}

.brand span {
  color: var(--accent);
}

/* ---------- DROPDOWN ---------- */

.post-selector {
  position: relative;
}

#togglePosts {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.4rem 0.7rem;
  border-radius: 6px;
  cursor: pointer;
}

#postList {
  position: absolute;
  right: 0;
  top: 2.5rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  list-style: none;
  padding: 0.5rem;
  width: 360px;
  max-height: 300px;
  overflow-y: auto;
}

#postList li {
  padding: 0.5rem;
  border-radius: 6px;
}

#postList li:hover {
  background: #0f1623;
}

#postList a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
}

.hidden {
  display: none;
}

/* ---------- HOMEPAGE ---------- */

main {
  max-width: 900px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}

.card {
  border: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 1.5rem;
  border-radius: 14px;
  margin-bottom: 1.5rem;
  transition: transform 0.15s ease, border 0.15s ease;
}

.card h2 a {
  color: var(--text);
  text-decoration: none;
}

.card:hover h2 a {
  color: var(--accent);
  text-shadow: 0 0 10px rgba(94, 234, 212, 0.6);
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.card h2 {
  margin: 0 0 0.4rem 0;
  font-size: 1.3rem;
}

.card p {
  color: var(--muted);
  margin-bottom: 0.6rem;
}

.card span {
  font-size: 0.8rem;
  color: var(--muted);
}